On Tue, 2005-06-28 at 17:23 -0400, Anna Oganyan wrote:
> Dear List,
> How can I convert a list with elements being character strings, like:
> "c(1,2,3,4)", “c(1,3,4,2) … to a list with elements as numerical
> vectors: c(1,2,3,4), c(1,3,4,2)…?
> Thanks!
> Anna
> l <- list("c(1,2,3,4)", "c(1,3,4,2)")
> l
[[1]]
[1] "c(1,2,3,4)"
[[2]]
[1] "c(1,3,4,2)"
Now use lapply() over each list element in 'l', converting the character
vectors to R expressions and then evaluating them:
> lapply(l, function(x) eval(parse(text = x)))
[[1]]
[1] 1 2 3 4
[[2]]
[1] 1 3 4 2
See ?lapply, ?eval and ?parse.
HTH,
Marc Schwartz
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